How to Flash:

Open Odin 3.04 Put your galaxy SII phone in download mode by pressing and hold these keys together:Volume Down + Home + Power.A Warning! screen will show up; press Volume Up key to continue to enter Download Mode

Connect Your phone to PC now and wait untill you get a yellow sign

Click the PDA button in Odin and browse to open the CODE_I9100XXLSJ.tar,Do not make any other changes in Odin and make sure the Re-Partition option is not selected.

Click the phone button in Odin and browse to open the MODEM_I9100XXLS6.tar,Do not make any other changes in Odin and make sure the Re-Partition option is not selected.

Click the CSC button in Odin and browse to open the CSC_HOME_OXX_I9100OXXLS1.tar,Do not make any other changes in Odin and make sure the Re-Partition option is not selected.

Now press the start button to begin the flashing of firmware,when the flashing is complete your phone will automatically reboot,plus, you’ll get a PASS message (with green background) in the left-most box at the very top of Odin.